Cement-mixer



P. 0. EGELAND.

CEMENT MIXER. APPLICATION FILED MAR' 29, I917.

Jim 5mm? Patented May 25, 1920.

UNITED STATES PATENT OFFICE.

PETER o. EGELAND, or

CEMENT-MIXER.

Specification of Letters Patent.

Patented May .25, 1920.

Application filed March 29, 1917. Serial No. 158,324.-

To all whom it may concern:

Be it known that I PETER O. EGELAND, a citizen of the United tates, residing at Alreley, in the county of Hubbard, State of M1I1 nesota, have invented certain new and useful Improvements in Cement-Mixers; and

I do hereby declare the following to be a full, clear, and exact description of the 1nvention, such as will enable'others skilled in the art to which it appertains to make an use the same. s

This invention relates to cement mixing machines, and has particular reference to those mixers which are employed to mix a batch of concrete or cement and then to discharge the same.

The object of the invention is to produce a batch cement or concrete mixer which, either as a machine of large capacity or one for small work, may be'economically built and operated. The operative parts are by my conception, reduced to a minimum, and the machine as 'awhole is capable of heavy duty without the probability of frequent breakage or disarrangement.

With the above objects in view and such others as may hereinafter appear, my in-' vention'will now be fully set forth and described, reference being had-to the accompanying drawings. I

In the drawings:-

Figure 1 is a side elevation of the device,

Fig. 2 is a longitudinal section, v

Fig. 3 is a side view showing the device in dumping position, and

Fig. 4 is a rear view partly broken away for the sake of clearness.

Referring more particularly to the drawings, the main frame comprises sills 1 from which rise standards 2 whose'upper' ends are connected longitudinally by the side bars 3, and transversely below their tops by the cross bars 4. Mounted between the side bars- 3, and journaled upon the spindle 5 is a rocking frame which-consists of side bars 6 which are joined substantially in the horizontal plane of the bars 3 by cross bars 7and 8, the'latter connecting the front ends of the side bars 6, and the bar7 being in real1ty.a

rearwardly, and has secured thereon the 2 this handle bar overlies the rear cross bar bearing 9 within which is journaled the stub shaft 10 which projectsv rearwardly from the bottomof a mixing drum 11. The mixing drum 11 is 'of any suitable cylindrical type having a closed bottom and an open top, the bottom suitably carrying the above mentioned stub shaft 10. Interiorly, the drum is provided with the radial mixing blades 12 in suitable position and number.

The forward end of the body of the drum is supported upon a pair of idler pulleys or rollers 13 which are journaled upon the forward endsof brackets 14: mounted upon a second inclined block or transverse bar 15 which also extends across butnot beyond the side barsof the swinging,or rocking frame. The surfaces of the pulleys 13 should lie in parallel relation to the outer surface of the drum 11 so as to provide a proper bearing therefor.

Mounted upon the rear end of the-stub shaft 10 is a bevel gear 16 which meshes with a second bevel gear 17 carried by a shaft 18. The shaft 18 is journaled in bearings on the rear cross bar 4 and a second bearing bar or support 19 secured across the frame 1, .and carries the bevel gear 17 at its forward end in position to freely mesh with the bevel gear 16. The rear end of the shaft 18 is provided with a drive pulley 20 and a removable hand\ crank 21, so that the machine may be driven either by hand or powers It will be noted from the foregoing that the shaft 18 is journaled in the fixed frame 1, so that when therocking frame is thrown forward to free the drum of its contents, the bevel gear lG is carried out of contact with the gear 17, and thereby the drum 11 is stopped from its mixing action as soon as the process of dumping the batch has begun. As the drum is tipped forwardly into the position shown in Fig. 3 the bar 8 at the forward end of the rock frame is thrown against a transverse rest or stop 22, which may be used as a bumper or jar against which the frame may be struck in order to free the drum 11 of all of its contents. The

rear end of the rocking frame carries a cross bar 23 which is of a length greater than the width of the main frame and serves as a handle bar for the ready manipulation of the rock frame into and out of its various operative positions. As seen in Figs. 1 and.

4 between the rear ends of the side bars3 and the'drive pulley 20, and as it projects laterally beyond both,- it may easily be grasped and raised when the drum is to be dumped. let its position is such that it would not interferewith a belt if one were led laterally from the pulley, nor would it interfere with the manual use of the crank 'handle2l.

F r oni the foregoing it will be apparent that I' have provided a-very simple and complete mixing machine which may be practicably Constructed in-various sizes, either for heavygwork or for small batch mixing. The

ment ofJparts. a

parts are very iew in number,,and are furthermore all of heavy solid character, so

that the devibe is fully capable. of standing thehard usage to which machines of this type are usually subjectechwithoutthe probability of frequent repair or disarrange- What I-claim as my invention is I In a cement mixer, the'combination with stop below their front' ends, and

bearings on said blocks, a drum mounted on the bearings of one block and having a shaft mounted in the bearings of the other block, and 'a wheel on said shaft adapted to coact with said driving mechanism in one position of the frame. I i

In testimony whereof, I afiix my signature in" the presence of'two witnesses. 1

- PETER O. EGELAND. Witnesses: ,t V a i 11.0, WEBSTER, j

l RAY WATT. 

